/**
 *
global_a=100
global_b=200
Hello World

 *
 */
#include<stdio.h>

extern int global_a;
extern int global_b;
extern void printHello();

int main(int argc, const char *argv[]){
	printf("global_a=%d\n",global_a);
	printf("global_b=%d\n",global_b);
	printHello();
	return 0;
}
